Add users from text file or csv to a Microsoft Teams site

intstructions.txt

Adding multiple users to teams by PowerShell and a text / CSV file

1) Create a .txt file like this

Name
[email protected]
[email protected]
 
2) Install the Teams PowerShell tools:
Install-Module -Name MicrosoftTeams
                         -RequiredVersion 0.9.0


3) Find the GroupId
PS get-team

4) Run this script
Import-Csv 'd:\email.txt' | % { 
Add-TeamUser -User $_.Name -GroupId <GroupID>
} 

It takes about 30 minutes or more before you see the updates users in Teams. Also an error will be displayed for all users that are alreay present.

PS_AddUsersToTeams

$path='d:\email.txt'
$GroupId=<groupid>

Import-Csv $path | % { 
Add-TeamUser -User $_.Name -GroupId $GroupId
} 

Hi.
Thanks for the solution - it works great, though it has one limitation that was not mentioned here :).
It works ONLY WITH MEMBERS - I cannot add guests to my team. Do you know of any possibility to bulk add (by importing a CSV for example) guest users to a team? (users with email addresses outside of the tenant). I can do this manually from the Teams interface but it takes forever if you have to do it with tens of users for multiple teams :(.

Here's another post I found which might be a solution if you edit the role column in CSV file:
https://flexmind.co/blog/how-to-add-bulk-users-from-csv-file-to-ms-teams-using-powershell/